<html>
<head>
  <title>Ensure correct behavior of drawImage video elements.</title>
  <style type="text/css">
  video {
    display: none;
  }
  </style>
</head>
<body>
  <canvas id="canvas"></canvas>
  <video id="video"></video>
  <script>
  var length = 150;
  var canvas = document.getElementById("canvas");
  canvas.setAttribute("width", length);
  canvas.setAttribute("height", length);
  var ctx = canvas.getContext("2d");

  var video = document.getElementById("video");
  video.requestVideoFrameCallback(drawImageToCanvas);
  video.src = "resources/canvas_video.webm";
  video.play();

  function drawImageToCanvas() {
    ctx.fillStyle = "blue";
    ctx.fillRect(0, 0, length, length);
    ctx.drawImage(video, 0, 0);
    ctx.globalAlpha = 0.5;
    ctx.drawImage(video, 0, 60);
    video.srcObject = null;
    if (window.testRunner)
      testRunner.notifyDone();
  }
  </script>
</body>
</html>
